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Wed, 25 Feb 2026 09:35:04 +0100 (CET) From: Nora Schiffer To: Frank Li , Sascha Hauer Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pengutronix Kernel Team , Fabio Estevam , linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, linux@ew.tq-group.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nora Schiffer Subject: [PATCH] arm64: dts: freescale: imx8mp-tqma8mpql-mba8mp-ras314: fix UART1 RTS/CTS muxing Date: Wed, 25 Feb 2026 09:34:18 +0100 Message-ID: <20260225083419.5639-1-nora.schiffer@ew.tq-group.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-cloud-security-sender: nora.schiffer@ew.tq-group.com X-cloud-security-recipient: linux-kernel@vger.kernel.org X-cloud-security-crypt: load encryption module X-cloud-security-Mailarchiv: E-Mail archived for: nora.schiffer@ew.tq-group.com X-cloud-security-Mailarchivtype: outbound X-cloud-security-Virusscan: CLEAN X-cloud-security-disclaimer: This E-Mail was scanned by E-Mailservice on mx-relay90-hz2.antispameurope.com with 4fLSZd0gYQzWygV X-cloud-security-connect: he-nlb01-hz1.hornetsecurity.com[94.100.132.6], TLS=1, IP=94.100.132.6 X-cloud-security-Digest: 1e9880415023cc401d11ce049b439fb1 X-cloud-security: scantime:1.897 DKIM-Signature: a=rsa-sha256; bh=ANOrIzf22DYFST/OGsWrBLVKkhNoHDH6p+6DszzjdIE=; c=relaxed/relaxed; d=ew.tq-group.com; h=content-type:mime-version:subject:from:to:message-id:date; s=hse1; t=1772008521; v=1; b=Bl4jeZr9k5uXl1o097HwE7luAzwqbwz1UYIvd3paI/ExcOnBmQO/hym9n19b2hJKcJGtz3HZ 7t6xRlsKn9PA4KAJDpfXJ1ppwdHmmso1uVHmqE8f/HFTMrb9l5s+zeOv75FRVsqElQvYH/+X/tD b58hhOoZm7BKMZf+sNRyb+ltZ94PU2VvCl64fmIdVlcqAdElyK8kvz5GZ9j2SKWwnIjkmDsiP2Y Sn8BPIsDX9pxFB/VJDBmMrFVpORsMV/NLIhV3jGmuJbKubNBMjLPIAm0pvCaFragy5EbSPT6Kxk OosbnCJ/YKnxliRRrmqmhK570tEVSjWDV7SMuWijXY9+g== The pinmuxing for UART1 was mixing DCE and DTE modes, which cannot work. Consistently use DCE mode. This switches the RTS and CTS pins, which is fine for this board, as UART1 is routed to a pin header. Fixes: ddabb3ce3f90 ("arm64: dts: freescale: add TQMa8MPQL on MBa8MP-RAS314= ") Signed-off-by: Nora Schiffer --- .../boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.d= ts b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts index b7f69c92b7748..1665a5030b993 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts @@ -848,8 +848,8 @@ pinctrl_tlv320aic3x04: tlv320aic3x04grp { pinctrl_uart1: uart1grp { fsl,pins =3D , , - , - ; + , + ; }; =20 pinctrl_uart1_gpio: uart1gpiogrp { --=20 TQ-Systems GmbH | M=C3=BChlstra=C3=9Fe 2, Gut Delling | 82229 Seefeld, Germ= any Amtsgericht M=C3=BCnchen, HRB 105018 Gesch=C3=A4ftsf=C3=BChrer: Detlef Schneider, R=C3=BCdiger Stahl, Stefan Sch= neider https://www.tq-group.com/